Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

library.amnh.org

Gottesman Research Library and Learning Center | AMNH

Page Load Speed

2.7 sec in total

First Response

37 ms

Resources Loaded

2 sec

Page Rendered

631 ms

library.amnh.org screenshot

About Website

Click here to check amazing Library AMNH content for United States. Otherwise, check out these important facts you probably never knew about library.amnh.org

Welcome to the David S. and Ruth L. Gottesman Research Library and Learning Center, the Museum’s repository for published scientific literature and archives.

Visit library.amnh.org

Key Findings

We analyzed Library.amnh.org page load time and found that the first response time was 37 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

library.amnh.org performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value2,240 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value18.4 s

3/100

10%

Network Requests Diagram

library.amnh.org

37 ms

research-library

153 ms

gtm.js

480 ms

488794743153594d558c30db374f6f69_1712248175_all.css

35 ms

lazysizes_with_bg.min.js

71 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Library.amnh.org, 44% (33 requests) were made to Amnh.org and 8% (6 requests) were made to Consentag.eu. The less responsive or slowest element that took the longest time to load (480 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 349.9 kB (38%)

Content Size

931.9 kB

After Optimization

581.9 kB

In fact, the total size of Library.amnh.org main page is 931.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 522.9 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 345.6 kB

  • Original 379.3 kB
  • After minification 174.4 kB
  • After compression 33.7 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 204.9 kB, which is 54% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 345.6 kB or 91% of the original size.

Image Optimization

-0%

Potential reduce by 1 B

  • Original 522.9 kB
  • After minification 522.9 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Library AMNH images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 4.3 kB

  • Original 29.7 kB
  • After minification 29.7 kB
  • After compression 25.3 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 4.3 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 46 (82%)

Requests Now

56

After Optimization

10

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Library AMNH. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

library.amnh.org accessibility score

79

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

library.amnh.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

library.amnh.org SEO score

92

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Library.amnh.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Library.amnh.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph data is detected on the main page of Library AMNH. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: